Cotton-gin.



E. LUMPKIN.

COTTON GIN.

APPLICATION FILED MAY 25, 1909.

961,624. I Patented June 14:, 1910.

3 SHEETS-SHEET 1.

WHMMOQQ v I E. LUMPKIN.

COTTON GIN. APPLIOATION FILED MAY 25, 1909.

Patented June 14, 1910.

3 SHEETSSHEET 2.

511112011 for, jd 'arl/zxm /r/q E. LUMPKIN.

COTTON GIN.

APPLICATION FILED MAY 25, 1909.

Patented June 14, 1910.

3 SHEETS-SHEET 3,

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following is a specification.

EDGAR LUMlPKIN, OF DALLAS, TEXAS.

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Speeifieetion of Letters Patent. Application filed may 25, 1909. Serial No. 498,296.

Patented June M, taro.

Be it' known .that I, EDGAR 'LUMPKIN, a citizen of the' United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Cotton-Gins, of which the This invention relates to cotton more particularly to cotton gins provided with attachments for stripping lint cotton from the saw teeth of the by means of air pressure or air in motion concentrated in the path of the saw teeth during operation.

The invention consists of certain improvements on the patent granted to Robert B. Lumpkin on January 26, 1909, No. 910,700. In that patent some trash and motes would fall on top of the air-feeding chute and thence fall down between the gin saws on the floor of the gin house.

One object of this invention is to provide air'chutes which will prevent the trash and motes from falling down throughthe saw-s and which provides a receptacle for receiving the motes and trash so that the same can be removed. v

Another object is tov reinforce the air blast which is utilized in said patent to strip the lint from the gin saws.

Another object is to improve the air supply tube or chamber for double gins.

Other objects and advantages will be fully explained in the following description-and the-hinvention will be more particularly pointed out in theclaims. N

Reference ishadto the accompanying drawings which form a part of this application and specification.

- Fi' e 1 is an end view of a double gin stan Fig. 2 is a vertical section of the double gin. Fig; 3 is a broken section, taken substantially along a portion of the line H of Fig. 2. Fig. 4 is a vertical section,

cleaner pipes.

Similar characters of reference are used showing a variation in the air supply and to indicatethe same parts throughout the gins and.

the frame 'elementsand Fig. 2, the numeral 2 indicates the. other frame element.

The gin saws-3 are journaled in said frame by means of shafts 4 and the gin breasts 5' are hinged to the side beams 6. Air chambers 7 and 8 are mounted in the upper part of the frame. These air-chambers are made separately and several advantages are ob-,

tamed by makingthe same in two parts.

This arrangement makes certain an equal amount of air pressure for each side of the gin and a changi inthe parts of one gin for any purpose w not affectthe operation of the air-pressure on the other side of the gin stand. The two parts are more readily adjusted than if made together. air-feeding chutes 9 and 10 extend from the air chambers 7 and 8 respectively downwardly lower than the gin saws andthen back upwardly in close proximity to the gin saws and terminate with bent lips 11, forming contracted exit chutes. The air blast The inain discharged from the chutes strikes a deflects, ing plate 12 which causes a concentratlon of;

the air-blast in the path of the saw teeth and drives the lintcotton from the saw teeth into lint chutes 13 which deliver the cotton to'a common lint receiver 14: f1'0m whence the cotton'is carried by the sanie air-pressureto a condenser or press. Auxilia air-feeding chutes 15 and 16 are provide for.rein

chutes and the chutes and close to' the peripheries, ofthe saws. Curved tubes 17, forming. outlets for the air, extend from the chutes 15 and- 16 be: tween the saws and terminate at points adj acent to the deflecting plates 12, the obj fact being to discharge the air at the points of the greatest concentration of air pressure from the main air-chutes and thus to aid in forcchambers 7 and '8 supply air for the respe tive chutes 9 and 15 and 10 and 16. The- "chambers 7 and 8 are bound together by suitable bands 18. i The gins are provided with the usual ribs ing the cotton fromthe saw teeth. The-Hair 19 for dischar g the cotton seed. The seed are discharge in seed chutes 20 which carry the seed to a common trough 21 from whence they are carried to a suitable storage place by a spiral conveyer 22.

Provision is made for removing trash and motes and dust. Portions of the peripheries of the saws at the backs of the s are exposed so that the saws throw 0 trash and motes and dust by reason of centrifugal force. I have provided pneumatic cleaning devices to catch such matter and remove the same from the gin. Suction pipes 26 are mounted in the machine frame and extend parallel to the gangs of saws and these pipes are provided with chutes 27 whichextend in close proximity to the saw teeth. The mouths of the chutes 27 are flared to form shallow hoods. As the trash and motes and dust are thrown .from the saws they will strike the hoods 28 and be drawn through the pipes 26 by suction. The suction must not be strong like the blast which removes the cotton from the saws, but can be strong enough to remove the trash and motes without interfering with the lint removing process. Provision may be made for removing any trash and motes that may pass the hoods 28 and fall down in the bends of the airchutes 15 and 16. Spiral conveyers 23 are mounted to run in the bends of the chutes 15 and 16 and are provided with projectin shafts 24 to which power may be applie for driving the same. .Chutes 25 are provided for directing the trash and motes into trough 21 or to any other suitable receptacle when forced out of the, bends of the airchutes by the conveyers 23. v

Fig. 4 illustrates a variation in the pneumatic cleaning pipes and in the devices for stripping the lint from the saws. The mechanism is much simplified. The auxiliary chutes are omitted from this view, but it is apparent that such chutes can be applied to this form of the gin. There is no change in the lint flue 14 nor in the seed chutes 20 nor trough 21 and conveyer 22. i There is nochange in theconstruction' of the air supply pipes 7 and 8 and lint chutes 13. The air-feeding chutes 29 and 30 operate in the same manner as the chutes 9 and 10, but

. are differently constructed. These chutes have the same bent portions 11. Instead of two conveyers, only one conveyer carries away trash and motes. Instead of two cleaner suction tubes, only one suction tube 32 is necessary since the air-feedin chutes and the air sup ly pipe are place in the lower part of t e machine. The suction chutes 27 and the hoods 28 operate as above described. -Any motes and trash that may escape the hoods 28 will fall down within a receptacle formed between the air-feeding .vided with outlet of saws, air-feedin ecnai chutes and be carried out of the machine by the conveyer 31. Having fully described my invention, what I claim as new and desire, to secure by Letters Patent, is,- V

1. In a cotton gin provided with a frame and a gang of saws mounted in each side of said frame and a common lint receiver; lint chutes extending from said saws to said receiver, an air-blast chamber, main air-feeding chutes extending from said air-blast chamber to and directing a blast of air upon the peripheries of said saws to drive the lint therefrom into said lint chutes, and

' auxiliary air-feeding chutes extending from said air-blast chamber to said saws and provided with outlet pipes projecting between the saws and discharging blasts radially outwardly between each pair of saws and approximately at the points at which the b ast from the main air feeding chutes strike the peri heries of the saws to drive the lint from t e saws into said lint chutes. 2; In a cotton gin provided with a frame and a gang of saws mounted in each side of said frame and a common lint receiver; lint chutes extending from the saws to said receiver, an air-blast chamber, main air-feeding chutes extending from said air-blast chamber and directing a blast of air upon the peripheries of said saws, deflecting plates forming connections between said aireeding chutes and said lint chutes, and auxiliary air-feeding chutes extending from said air-blast chamber to said saws and proipes the extremities of which project radia y outward between the saws at the points of said saws at which the 'blasts from said main air-feeding chutes strike the saws and cooperatin with said main air-feeding chutes and sa1d plates to concentrate air-pressure in the paths of the saw teeth.-

3. In a cotton provided with a frame and a gang thereof; an air blast chamber, a receptacle for trash and motes adjacent to each gang of saws, air-feedin with said air-cham er and terminating in close roximity to-said saws to drive the lint there rom said air-feedingmchutes being arranged to form said receptacle adjacent to. and below each gang of saws, and means for removing the trash and motes from said receptacle.

In a cotton provided with a frame and a gang of saws mounted in each side thereof, an air blast chamber, a receptacle for trash and motes adjacent to each gang chutes communicating with said air-cham er and terminating in close roximity to said saws to drive the lint there om, said air-feeding chutes being exof saws mounted in each side chutes communicatingv tended downwardly and then bent upwardly In testimony whereof-1 set my hand in to form said trash and motes receptacles, the presence of two witnesses, this 14th day spiral conveyers mounted in the'bends of of May, 1909.

said air-feeding chutes, and chutes connect- EDGAR LUMPKIN. ed with said receptacles to receive trash and Witnesses: motes removed from saidreceptacles by said J. E. MODONALD,

conveyers. F. E. MCDONALD. 

